[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Dec 30 18:03:16 UTC 2022


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 31 Dec, 2022

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              917924
    Prefixes after maximum aggregation (per Origin AS):          347369
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      444630
Total ASes present in the Internet Routing Table:                 74011
    Prefixes per ASN:                                             12.40
Origin-only ASes present in the Internet Routing Table:           63510
Origin ASes announcing only one prefix:                           26120
Transit ASes present in the Internet Routing Table:               10501
Transit-only ASes present in the Internet Routing Table:            420
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               997
    Number of instances of unregistered ASNs:                      1006
Number of 32-bit ASNs allocated by the RIRs:                      40995
Number of 32-bit ASNs visible in the Routing Table:               33960
Prefixes from 32-bit ASNs in the Routing Table:                  165418
Number of bogon 32-bit ASNs visible in the Routing Table:            28
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            512
Number of addresses announced to Internet:                   3066193664
    Equivalent to 182 /8s, 194 /16s and 103 /24s
    Percentage of available address space announced:               82.8
    Percentage of allocated address space announced:               82.8
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      311788

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   239940
    Total APNIC prefixes after maximum aggregation:               68587
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          234774
    Unique aggregates announced from the APNIC address blocks:    97577
APNIC Region origin ASes present in the Internet Routing Table:   13224
    APNIC Prefixes per ASN:                                       17.75
APNIC Region origin ASes announcing only one prefix:               3863
APNIC Region transit ASes present in the Internet Routing Table:   1778
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         29
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8475
Number of APNIC addresses announced to Internet:              773781888
    Equivalent to 46 /8s, 30 /16s and 249 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    267528
    Total ARIN prefixes after maximum aggregation:               121759
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           269100
    Unique aggregates announced from the ARIN address blocks:    129583
ARIN Region origin ASes present in the Internet Routing Table:    19047
    ARIN Prefixes per ASN:                                        14.13
ARIN Region origin ASes announcing only one prefix:                6962
ARIN Region transit ASes present in the Internet Routing Table:    1953
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4704
Number of ARIN addresses announced to Internet:              1288419840
    Equivalent to 76 /8s, 203 /16s and 186 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    263412
    Total RIPE prefixes after maximum aggregation:               122160
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           260294
    Unique aggregates announced from the RIPE address blocks:    156114
RIPE Region origin ASes present in the Internet Routing Table:    28210
    RIPE Prefixes per ASN:                                         9.23
RIPE Region origin ASes announcing only one prefix:               12031
RIPE Region transit ASes present in the Internet Routing Table:    3971
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10958
Number of RIPE addresses announced to Internet:               719523712
    Equivalent to 42 /8s, 227 /16s and 15 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  117498
    Total LACNIC prefixes after maximum aggregation:              28422
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116745
    Unique aggregates announced from the LACNIC address blocks:   48956
LACNIC Region origin ASes present in the Internet Routing Table:  11010
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2668
LACNIC Region transit ASes present in the Internet Routing Table:  2280
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8772
Number of LACNIC addresses announced to Internet:             176073984
    Equivalent to 10 /8s, 126 /16s and 173 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  28549
    Total AfriNIC prefixes after maximum aggregation:              5687
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         36499
    Unique aggregates announced from the AfriNIC address blocks:  11987
AfriNIC Region origin ASes present in the Internet Routing Table:  1709
    AfriNIC Prefixes per ASN:                                     21.36
AfriNIC Region origin ASes announcing only one prefix:              596
AfriNIC Region transit ASes present in the Internet Routing Table:  328
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1051
Number of AfriNIC addresses announced to Internet:            108099072
    Equivalent to 6 /8s, 113 /16s and 118 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        9229       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5946        787     702  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4861       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3625       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3504       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3373       1874      95  VNPT-AS-VN VNPT Corp, VN
  9498        2679        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2528      11251     593  KIXS-AS-KR Korea Telecom, KR
 24560        2349        848     439  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2180       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        7755      10637    2930  AMAZON-02, US
 11492        4546        301     565  CABLEONE, US
  7155        3894        265      33  VIASAT-SP-BACKBONE, US
 22773        3690       3062     320  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3520       1320      63  SHAW, CA
 16625        3466       1796    2510  AKAMAI-AS, US
   749        3025      50577    2292  DNIC-AS-00749, US
  7018        2617      24133    1582  ATT-INTERNET4, US
396982        2574       3493     369  GOOGLE-CLOUD-PLATFORM, US
 30036        2563        368     393  MEDIACOM-ENTERPRISE-BUSINESS, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6946       1706     146  UNI2-AS, ES
  9121        6125       1692      17  TTNET, TR
 39891        4560        269      57  ALJAWWALSTC-AS, SA
 20940        4050       3400     183  AKAMAI-ASN1, NL
  8551        3698        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     908  ROSTELECOM-AS, RU
 47331        2813        412    2121  TTNET, TR
  9009        2637        251    1354  M247, RO
 34984        2255        358     611  TELLCOM-AS, TR
  6849        2195        339      20  UKRTELNET, UA

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10935       3340     592  Uninet S.A. de C.V., MX
 10620        3466        507     852  Telmex Colombia S.A., CO
 11830        2257        369      64  Instituto Costarricense de Electricidad
 13999        2197        360     590  Mega Cable, S.A. de C.V., MX
 28573        1345       2328     258  Claro NXT Telecomunicacoes Ltda, BR
  6503        1295        339     517  Axtel, S.A.B. de C.V., MX
  3816        1291        740     156  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1153        370      22  Telefonica del Peru S.A.A., PE
 11664        1133        186     466  Techtel LMDS Comunicaciones Interactiva
 26615         991       2466      43  TIM SA, BR

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24835        1538        535      31  RAYA-AS, EG
 24863        1469        393      21  LINKdotNET-AS, EG
 36992        1319       1517     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1014         67      40  ORANGE-COTE-IVOIRE, CI
 36935         882        520      42  Vodafone-, EG
  6713         611       1861      34  IAM-AS, MA
 15399         519         53      42  WANANCHI-, KE
 37342         494         32       1  MOVITEL, MZ
  2018         373        319      72  TENET-1, ZA

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10935       3340     592  Uninet S.A. de C.V., MX
  9808        9229       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7755      10637    2930  AMAZON-02, US
 12479        6946       1706     146  UNI2-AS, ES
  9121        6125       1692      17  TTNET, TR
  7545        5946        787     702  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4861       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4560        269      57  ALJAWWALSTC-AS, SA
 11492        4546        301     565  CABLEONE, US
 20940        4050       3400     183  AKAMAI-ASN1, NL

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9229         9179  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6946         6800  UNI2-AS, ES
  9121        6125         6108  TTNET, TR
  7545        5946         5244  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7755         4825  AMAZON-02, US
  4538        4861         4786  ERX-CERNET-BKB China Education and Research Net
 39891        4560         4503  ALJAWWALSTC-AS, SA
 11492        4546         3981  CABLEONE, US
 20940        4050         3867  AKAMAI-ASN1, NL
  7155        3894         3861  VIASAT-SP-BACKBONE, US

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR
23.139.232.0/24      Origin:    211619  MAXKO, HR
23.139.232.0/24     Transit:     42864  GIGANET-HU GigaNet Internet Service Prov

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:39      /11:101     /12:296     
/13:587     /14:1204    /15:2045    /16:13501   /17:8319    /18:13928   
/19:25196   /20:44286   /21:52346   /22:110184  /23:98152   /24:546899  
/25:812     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 12479        5993        6946  UNI2-AS, ES
  9121        5300        6125  TTNET, TR
  8151        4922       10935  Uninet S.A. de C.V., MX
 39891        3551        4560  ALJAWWALSTC-AS, SA
 11492        3453        4546  CABLEONE, US
  6327        3328        3520  SHAW, CA
  8551        3163        3698  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        2983        3894  VIASAT-SP-BACKBONE, US
 22773        2724        3690  ASN-CXA-ALL-CCI-22773-RDC, US
 47331        2434        2813  TTNET, TR

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1636      2:1234      3:168       4:5         5:4106      6:110    
   7:5         8:1574      9:1        11:172      12:1592     13:372    
  14:2369     15:282      16:76       17:371      18:410      20:243    
  21:4        22:188      23:6016     24:2459     25:4        27:2711   
  29:19       31:2495     32:101      34:8        35:95       36:1825   
  37:4593     38:3994     39:819      40:144      41:3915     42:1056   
  43:2320     44:306      45:16461    46:4243     47:381      49:1723   
  50:1931     51:374      52:1542     54:396      55:826      56:8      
  57:80       58:1750     59:1159     60:1005     61:2433     62:2600   
  63:1932     64:5641     65:2327     66:4899     67:3042     68:1362   
  69:4137     70:1256     71:656      72:2994     74:2594     75:1465   
  76:597      77:2356     78:3964     79:2945     80:2060     81:1838   
  82:1484     83:1233     84:1520     85:3748     86:742      87:1924   
  88:2870     89:3537     90:587      91:7631     92:1980     93:2572   
  94:3513     95:4846     96:1315     97:344      98:1174     99:741    
 100:75      101:1061    102:2505    103:30728   104:4607    105:484    
 106:849     107:2546    108:914     109:4394    110:2046    111:3315   
 112:2029    113:1559    114:1609    115:2039    116:1892    117:2475   
 118:2287    119:1893    120:1743    121:1108    122:2583    123:2150   
 124:1577    125:2326    128:1290    129:1061    130:969     131:2004   
 132:804     133:404     134:1895    135:298     136:885     137:915    
 138:2588    139:1503    140:1026    141:1486    142:1420    143:1441   
 144:1189    145:352     146:1889    147:1538    148:2284    149:1856   
 150:860     151:1137    152:1845    153:476     154:3864    155:1412   
 156:1641    157:1299    158:1045    159:2235    160:2572    161:1430   
 162:3545    163:1489    164:1618    165:1647    166:832     167:1736   
 168:3878    169:921     170:4569    171:888     172:3506    173:3061   
 174:1025    175:1145    176:3641    177:4777    178:3524    179:2153   
 180:2375    181:3384    182:3275    183:1931    184:2368    185:19977  
 186:4634    187:3919    188:4116    189:3441    190:9029    191:1465   
 192:10966   193:8837    194:7197    195:5090    196:2966    197:2405   
 198:5995    199:6102    200:7711    201:5874    202:10654   203:10034  
 204:4602    205:3511    206:3846    207:3406    208:4117    209:4834   
 210:4430    211:2495    212:4092    213:3548    214:1100    215:55     
 216:6594    217:2640    218:1271    219:576     220:2033    221:960    
 222:843     223:2003   

End of report


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